Question

Hi I am trying to create a search function but having trouble on getting it to work.

This is what I have so far:

SELECT DISTINCT users.ID, users.name

FROM users 
INNER JOIN usersSkills 
ON users.ID = usersSkills.userID 
INNER JOIN usersLanguages 

ON users.ID = usersLanguages.userID 
WHERE activated = "1" 
AND type = "GRADUATE" 

AND usersSkills.skillID IN(2) 
GROUP BY usersSkills.userID HAVING COUNT(*) = 1 

AND usersLanguages.languageID IN(2) 
GROUP BY usersLanguages.userID HAVING COUNT(*) = 1 

But I keep getting this error:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘GROUP BY usersLanguages.userID HAVING COUNT(*) = 1’ at line 14

If i remove one of the inner joins and group bys it works so not sure what it is can i use two group bys?

Answer 1

Tr this:

SELECT DISTINCT users.ID, users.name, COUNT(*)
FROM users 
INNER JOIN usersSkills ON users.ID = usersSkills.userID 
INNER JOIN usersLanguages ON users.ID = usersLanguages.userID 
WHERE activated = "1" 
      AND type = "GRADUATE" AND usersSkills.skillID = 2 
      AND usersLanguages.languageID = 2 
GROUP BY usersSkills.userID,
         usersLanguages.userID 
HAVING COUNT(*) = 1 

Removed the multiple erroneous GROUP BY‘s and merged the query.
Also changed the IN(x) to = x